I really enjoyed Rettburg's article for the way it describes all the different facets of collective authorship. I guess I had been thinking of collective narratives mostly in terms of the final product/project, but Rettburg's description of his collaborative process of writing The Unknown sounded much more focused on the actual writing process as a kind of performance. Ranging from "in person get-togethers taking turns at the keyboard" to "collective expeditions" and "sessions with friends," much of the process was live collaboration as opposed to virtual.